.page-about {
  --about-marker-w: 208px;
  --about-line: rgba(140, 243, 220, .10);
  --about-line-strong: rgba(140, 243, 220, .24);
  --about-soft: rgba(232, 245, 240, .74);
  overflow-x: clip;
}

/* ---------- Hero ---------- */

.page-about .about-hero {
  padding: clamp(26px, 4.5vw, 56px) 0 clamp(44px, 7vw, 92px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(22px, 3.6vw, 44px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(33px, 6.2vw, 72px);
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--chalk);
  max-width: 15em;
}

.page-about .about-hero__lead {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 36em;
  color: var(--about-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-hero__aside {
  padding: clamp(22px, 3vw, 32px);
  border-radius: var(--radius-l);
  align-self: start;
}

.page-about .about-hero__aside-num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(62px, 12vw, 108px);
  line-height: .82;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .about-hero__aside-label {
  margin: 12px 0 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--sage);
}

.page-about .about-hero__aside .rule {
  margin: 20px 0;
}

.page-about .about-hero__aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: var(--about-soft);
}

.page-about .about-hero__aside-list span {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan-soft);
  margin-right: 8px;
}

/* ---------- Chapter shell ---------- */

.page-about .about-chapter {
  padding: clamp(46px, 7.5vw, 104px) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(18px, 3vw, 36px);
}

.page-about .about-chapter__big {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(50px, 9vw, 92px);
  line-height: .86;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .about-chapter__kicker {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sage);
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(25px, 3.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--chalk);
}

.page-about .about-chapter__prose {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 36em;
  color: var(--about-soft);
}

.page-about .about-chapter__prose p + p {
  margin-top: 1em;
}

.page-about .about-chapter__media {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-chapter__media--end {
  margin-top: clamp(30px, 4.5vw, 52px);
}

.page-about .media__frame {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--about-line);
}

.page-about .media img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
  max-width: 48em;
}

/* ---------- Timeline ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: clamp(28px, 4.4vw, 46px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, rgba(79, 227, 193, .55), rgba(79, 227, 193, .06));
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__item + .about-timeline__item {
  border-top: 1px solid var(--about-line);
}

.page-about .about-timeline__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  margin: 0;
  padding: 16px 8px 16px 28px;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__trigger {
  background: rgba(79, 227, 193, .045);
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 2px;
  top: 50%;
  width: 11px;
  height: 11px;
  margin-top: -5.5px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid rgba(79, 227, 193, .5);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-timeline__item[data-open] .about-timeline__dot {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(79, 227, 193, .13);
}

.page-about .about-timeline__year {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--cyan);
  flex: 0 0 auto;
  min-width: 3.6em;
  letter-spacing: -.01em;
}

.page-about .about-timeline__head {
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.5;
  color: var(--chalk);
}

.page-about .about-timeline__item .disclosure__panel {
  padding: 0 0 6px 28px;
}

.page-about .about-timeline__item .disclosure__body {
  max-width: 36em;
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

/* ---------- Roles ---------- */

.page-about .about-roles {
  display: grid;
  gap: 10px;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-role {
  border: 1px solid var(--about-line);
  border-radius: var(--radius-m);
  background: var(--glass);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-role:hover {
  border-color: var(--about-line-strong);
  background: var(--glass-strong);
}

.page-about .about-role[data-open] {
  border-color: var(--about-line-strong);
  background: var(--ink-850);
}

.page-about .about-role__trigger {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px 16px;
  width: 100%;
  margin: 0;
  padding: 16px 18px;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-role__name {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: .01em;
  color: var(--chalk);
}

.page-about .about-role__count {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-soft);
  white-space: nowrap;
}

.page-about .about-role__track {
  grid-column: 1 / -1;
  grid-row: 2;
  display: block;
  height: 4px;
  border-radius: 999px;
  background: rgba(232, 245, 240, .07);
  overflow: hidden;
}

.page-about .about-role__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(79, 227, 193, .45), var(--cyan));
}

.page-about .about-role .disclosure__panel {
  padding: 0 18px;
}

.page-about .about-role .disclosure__body {
  padding: 0 0 18px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

/* ---------- Proof ---------- */

.page-about .about-proof {
  display: grid;
  gap: clamp(24px, 3.4vw, 36px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-proof__steps {
  min-width: 0;
}

.page-about .about-proof__step {
  position: relative;
  padding: 22px 22px 22px 66px;
  border-radius: var(--radius-m);
  background: var(--ink-900);
  border: 1px solid var(--about-line);
}

.page-about .about-proof__step + .about-proof__step {
  margin-top: 12px;
}

.page-about .about-proof__num {
  position: absolute;
  left: 20px;
  top: 22px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--flame);
}

.page-about .about-proof__step-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.25;
  color: var(--chalk);
}

.page-about .about-proof__step p {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-proof__media {
  margin: 0;
}

/* ---------- CTA ---------- */

.page-about .about-cta {
  padding: clamp(48px, 7vw, 92px) 0 clamp(56px, 8vw, 110px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.2;
  color: var(--chalk);
}

.page-about .about-cta__grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-cta__link {
  display: block;
  padding: 20px 22px;
  border-radius: var(--radius-m);
  border: 1px solid var(--about-line);
  background: var(--glass);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  border-color: var(--about-line-strong);
  background: var(--glass-strong);
  transform: translateY(-3px);
}

.page-about .about-cta__link-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.1vw, 22px);
  color: var(--cyan);
}

.page-about .about-cta__link-note {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-soft);
}

/* ---------- Responsive ---------- */

@media (min-width: 700px) {
  .page-about .about-cta__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, .78fr);
    align-items: start;
  }

  .page-about .about-proof {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 320px);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-marker-w) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .about-chapter__marker {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-about .about-timeline__trigger {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-left: 26px;
  }

  .page-about .about-timeline__year {
    min-width: 0;
  }

  .page-about .about-proof__step {
    padding: 44px 18px 18px 18px;
  }

  .page-about .about-proof__num {
    left: 18px;
    top: 18px;
  }
}
<<<END>>>

.page-about {
  --w: 1rem;
}